using System; using System.Linq; using System.Linq.Expressions; using System.Collections.Generic; using Debug = System.Diagnostics.Debug; using StringBuilder = System.Text.StringBuilder; using System.Numerics; using Number = System.Int64; namespace Program { public class Solver { public void Solve() { var n = sc.Integer(); var a = sc.Integer(n); var q = sc.Integer(); var ql = new int[q]; var qh = new int[q]; for (int i = 0; i < q; i++) { ql[i] = sc.Integer(); qh[i] = sc.Integer(); } var xs = new List() { -1 }; foreach (var x in a) xs.Add(x); foreach (var x in ql) xs.Add(x); foreach (var x in qh) xs.Add(x); xs = xs.Distinct().OrderBy(x => x).ToList(); var size = xs.Count; var left = new FenwickTree(size); var right = new FenwickTree(size); for (int i = 0; i < n; i++) { var p = xs.BinarySearch(a[i]); right.Add(p, 1); } var count = new long[xs.Count]; long intersect = 0; for (int i = 0; i < n; i++) { var p = xs.BinarySearch(a[i]); intersect -= left[p, p] * right[p, p]; right.Add(p, -1); { var l = left[p - 1]; var r = right[p - 1]; count[p] += l * r; } { var l = left[p + 1, size]; var r = right[p + 1, size]; count[p] += l * r; } count[p] -= intersect; Debug.WriteLine(count.AsJoinedString()); left.Add(p, 1); intersect += left[p, p] * right[p, p]; } for (int i = 1; i < xs.Count; i++) count[i] += count[i - 1]; for (int i = 0; i < q; i++) { var l = xs.BinarySearch(ql[i]); var h = xs.BinarySearch(qh[i]); IO.Printer.Out.WriteLine(count[h] - count[l - 1]); } } public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput()); static T[] Enumerate(int n, Func f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; } static public void Swap(ref T a, ref T b) { var tmp = a; a = b; b = tmp; } } } #region main static class Ex { static public string AsString(this IEnumerable ie) { return new string(System.Linq.Enumerable.ToArray(ie)); } static public string AsJoinedString(this IEnumerable ie, string st = " ") { return string.Join(st, ie); } static public void Main() { var solver = new Program.Solver(); solver.Solve(); Program.IO.Printer.Out.Flush(); } } #endregion #region Ex namespace Program.IO { using System.IO; using System.Text; using System.Globalization; public class Printer: StreamWriter { static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; } public static Printer Out { get; set; } public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } } public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { } public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { } public void Write(string format, T[] source) { base.Write(format, source.OfType().ToArray()); } public void WriteLine(string format, T[] source) { base.WriteLine(format, source.OfType().ToArray()); } } public class StreamScanner { public StreamScanner(Stream stream) { str = stream; } public readonly Stream str; private readonly byte[] buf = new byte[1024]; private int len, ptr; public bool isEof = false; public bool IsEndOfStream { get { return isEof; } } private byte read() { if (isEof) return 0; if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } } return buf[ptr++]; } public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; } public string Scan() { var sb = new StringBuilder(); for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b); return sb.ToString(); } public string ScanLine() { var sb = new StringBuilder(); for (var b = Char(); b != '\n'; b = (char)read()) if (b == 0) break; else if (b != '\r') sb.Append(b); return sb.ToString(); } public long Long() { if (isEof) return long.MinValue; long ret = 0; byte b = 0; var ng = false; do b = read(); while (b != 0 && b != '-' && (b < '0' || '9' < b)); if (b == 0) return long.MinValue; if (b == '-') { ng = true; b = read(); } for (; true; b = read()) { if (b < '0' || '9' < b) return ng ? -ret : ret; else ret = ret * 10 + b - '0'; } } public int Integer() { return (isEof) ? int.MinValue : (int)Long(); } public double Double() { var s = Scan(); return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN; } private T[] enumerate(int n, Func f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(); return a; } public char[] Char(int n) { return enumerate(n, Char); } public string[] Scan(int n) { return enumerate(n, Scan); } public double[] Double(int n) { return enumerate(n, Double); } public int[] Integer(int n) { return enumerate(n, Integer); } public long[] Long(int n) { return enumerate(n, Long); } } } #endregion #region FenwickTree [System.Diagnostics.DebuggerDisplay("Data={ToString()}")] public class FenwickTree { int n; long[] bit; int max = 1; public FenwickTree(int size) { n = size; bit = new long[n + 1]; while ((max << 1) <= n) max <<= 1; } /// sum[a,b] public long this[int i, int j] { get { return this[j] - this[i - 1]; } } /// sum[0,i] public long this[int i] { get { long s = 0; for (; i > 0; i -= i & -i) s += bit[i]; return s; } } public int LowerBound(long w) { if (w <= 0) return 0; int x = 0; for (int k = max; k > 0; k >>= 1) if (x + k <= n && bit[x + k] < w) { w -= bit[x + k]; x += k; } return x + 1; } /// add v to bit[i] public void Add(int i, long v) { if (i == 0) System.Diagnostics.Debug.Fail("BIT is 1 indexed"); for (; i <= n; i += i & -i) bit[i] += v; } public override string ToString() { return string.Join(",", Enumerable.Range(0, n + 1).Select(i => this[i, i])); } } #endregion